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America is now the world's biggest exporter of ethane, a part of natural gas that's a building block for making plastics. That's helping fuel the fast-growing global plastics industry.

Lizzo was nominated across five of the night's top categories, including best new artist. Billie Eilish is also up for that coveted prize along with Lil Nas X and Tank & The Bangas.

Closed-door testimony from the only White House staffer cooperating with the probe could provide first-hand knowledge about details that remain hazy.

Only one major self-funding candidate — President Trump — has ever won the Oval Office. Despite long odds, some Democrats are spending millions of their own on the 2020 race, or contemplating it.

Searchlights illuminate the sky between El Paso, Texas, and Ciudad Juarez, Mexico, but they have nothing to do with border enforcement. They're part of a large-scale binational art installation.

A former sous chef at Antarctica's McMurdo Station is making cakes inspired by her colleagues' research projects. She says cake can be a gateway to conversations people might otherwise shy away from.

Bloomberg announced his candidacy for the Democratic nomination, saying Trump "represents an existential threat to our country and our values." The businessman is a late entrant to a crowded field.

In the Canadian Arctic, food that's shipped in can be costly. People still hunt as their ancestors did — for seal, polar bear and narwhal.

The Solomon Islands and Kiribati recently established ties with China. Economic considerations are a key driver, but both nations also cite concerns about climate change as a reason for the decision.

This week, the first lab-grown meat was cooked and eaten. The scientific experiment cost more than $300,000 — a bit more than a Big Mac. Guest host Celeste Headlee speaks with food futurologist Morgaine Gaye about what food of the future may be.